The Transmission Rebuilders Network
World-class transmission rebuilders from around the world interacting on transmission diagnostics and repair.

Aamco Transmission Centers
Fixing manual, or automatic transmissions.

Understanding Automatic Transmissions
What to do when your automatic transmission does not work, or if it does work, how to keep it working. Also, a description of engine and transmission theory.

How to Check a Transmission
Illustrated advice on how to check a manual or automatic transmission.

Pre 1929 Vintage Chevrolet Transmissions
Provides instructions for teardown, inspection, repair and assembly of Pre WW-II Chevrolet Transmissions. Lists replacement part numbers, information on Johnson Overdrive and a source page listing over 30 dealers for all types of Chevrolet related items.

A Short Course on Automatic Transmissions
Long article explaining the concepts behind modern automatic transmissions and their repair.